Chill-mold



(No Model.)

Y J. W. SBIGH. CHILL MOLD.; No. 362,545. i Y Patented May 10.1887.-

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N. PETERS1 PhowLilhagraphar. Wlshingnn, D4 C- Y UNITED STATESl PATENT OFFICE.

JOHN W. SEIGH, OFJOHNSTOWN, PENNSYLVANIA.

vCHILI.-

MOLD.

SPECIFICATION forming part of Letters Patent No. 362,5l5I dated May 10, 1887.

Application filed J anuary 15, 1887. Serial No. 324,410. (No model.)

To aZZ whom it may concern:

Be it known that I, JOHN W. SEIGH, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Improvement in Chill-Molds, andI do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to iron or chill molds for casting pig-iron. Inthe ordinary practice of casting pig-iron the molten metal is tapped from the blast-furnaceand is caused to tlow but it is customary in some cases to use castiron or chill molds for the purpose.

My improvement is mainly directed to the construction of the latter, Vand is designed to lit them for use with a method of breaking off and removing the pigs, described in Letters Patent No. 352,631, granted to me on 4November 16, 1886, by means of chains embeddedv beneath the molds and raised by a suitableelevating device, so as to break off and convey away any desired number of pigs, instead of the former slow and laborious practice of breaking the pigs off one byone and conveying them away by manual labor.

To enable others skilled in the artto make and `use my invention, I will now describe it by reference. to the accompanying drawings,

Vin which;

Figure 1 is a cross-sectional `view of a chillmold embodying my invention on the line A A of Fig. 2. Fig. 2 is a plan View of the mold sow or distributinggroove, b, extending along one edge, and lateral grooves, c,.for forming the pigs, connected-to the groove b by gates or sprues d. As shown in the section B B, Fig. 3, the grooves c are deeper than the groove b, the point where they merge into each other having a shoulder, e. Extending parallel to the groove b and transversely to the grooves c, near the ends of the latter, are grooves f, of a depth much greater than the grooves c. The purpose of these grooves is to receive the elevating chains or cables g below the level of the grooves c. These lifting chains or cables are first placed in the grooves f, and are then covered over with sand or clay, as indicated in Figs. 1 and 2, and the top surface of the sand or clay is imprinted so as to form a continuance across the groove f of the pig-molds c.

The mold a is placed on the floor of the casting-house or foundry, in connection with asuitable number of similar molds to constitute a pig-bed of the required size. After the chains g have been placed in the grooves fand covered with sand or loam, las described and illustrated, the pigs are cast in the usual Way, and when the casting is completed and the metal cools they lie upon the pig-bed connected With the sow in the ordinary way. When they are sufficiently cooled. hooksh, or the other suspension devices of the elevating mechanism, are connected to the ends of the chains which project beyond the sides of the mold or molds. Then the chains are raised, and, coming irst in contact with the outer pigs, break them off from the sow, the shoulder e of the mold, as well as the weight of the sow and the unbroken pigs, insuring this breaking, which continues from pig to pig, from the ends toward the center, until all the pigs are broken from the sow and elevated by the cha-ins to the required height, when they are conveyed by the elevating'devices to be discharged at the desired point.

So much of this description as relates tothe elevating and conveying devices is not illustrated, as it has nothing to do with the subjectmatter of this case.

In order to facilitate the breaking of the sow into suitable lengths, I have formed lateral ridges z' across the mold b, so that when the IOO pigs have been removed the sow can be raised out of its mold and easily broken apart by the blow of a sledge or heavy bar.

By my invention I am enabled to obtain the advantage of the hereinbefore-mentioned method of breaking and removing the pigs by means of elevating-chains with chill-molds, whereas the use of such method has heretofore been limited to use with ordinary sand molds. In addition to this, the construction of the mold ais such as facilitates the breaking of the pigs and sow, and is of advantage even when made Without the grooves f.

That I claim as my invention, and desire to secure by Letters Patent, is-

l. A chill-mold for casting pig-iron, having grooves extending transversely under the pigniolding cavities, substantially as and for the purposes described.

2. A chill-mold for casting pig-iron, having a longitudinal groove or channel with transverse pig-molds, and deep grooves extending transversely to the pig-molds, whereby chains or cables may be embedded in earth or sand in such grooves below the level of the pig-molds, substantially as and for the purposes described. In testimony whereof I have hereunto set my hand this 12th day of January, A. D. 1887.

JOHN XV. SEIGH. Witnesses:

ALvAR AKERs, NATHANIEL BUTLER. 

